belong vs belong to

belong and belong to both are verbs.

Word	Noun	Adjective	Verb	Adverb
belong	No	No	Yes	No
belong to	No	No	Yes	No

As verbs, belong and belong to are synonyms defined as:

belong (verb)	belong to (verb)
be owned by; be in the possession of	be a part or adjunct
be rightly classified in a class or category
be suitable or acceptable
be in the right place or situation
be a part or adjunct
be a member, adherent, inhabitant, etc. (of a group, organization, or place)